Theia 2139
0.24
UTI
0.0
CN
0.44
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
3.2 [arcmin]
- CN 0.0 Sparse
- Cdens 0.44 Loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 2139 is a sparse, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Moderate extinction
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 201.747 | -62.03 | 0.289 | -5.675 | -1.744 | -99.813 |
| Hunt & Reffert | 2024 | 201.65 | -62.024 | 0.29 | -5.621 | -1.775 | -74.446 |
| Cavallo et al. | 2024 | 202.059 | -62.084 | 0.289 | â | â | â |
| Hunt & Reffert | 2023 | 201.65 | -62.024 | 0.29 | -5.621 | -1.775 | -74.446 |
đĄ Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 495* | â | â |
| Cavallo et al. | 2024 | 2.56 | 2.74 | â | 52 | -0.050 | â | â | â |
| Hunt & Reffert | 2023 | 3.19 | 2.86 | 2.54 | 11 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Bronze sample.